public void Update(bool actualSize, bool preserveAspectRatio, string sourceUrl = null)
{
if (NeedToDownloadImage && sourceUrl != null)
{
Uri imageUri;
try
{
imageUri = new Uri(sourceUrl);
}
catch (UriFormatException ex)
{
throw ExceptionFactory.SourceFormat(ex);
}
LoadImageFromRemoteUrl(imageUri, actualSize, preserveAspectRatio);
NeedToDownloadImage = false;
}
else if (SourceFileId != null)
{
LoadImage(SourceFileId, actualSize, preserveAspectRatio);
}
}
protected override void SetItem(int index, T item)
{
throw ExceptionFactory.CollectionSetterNotSupported();
}